Variable delivery, reversible flow vane pump for fluid transmissions



July 26, 1949. R. D. HARTZLER 2,477,371

VARIABLE DELIVERY, REVERSIBLE FLOW VANE PUMP FOR FLUID TRANSMISSIONSFiled Oct. 1, 1945 5 Sheets-Sheet 1 Rap/190M161 Harfifefi July 26, 1949.R. D. HARTZLER 2,477,371

VARIABLE DELIVERY, REVERSIBLE FLOW VANE PUMP FOR FLUID TRANSMISSIONSFiled Oct. 1, 1945 5 Sheets-Sheet 2 7 49 Inventor Attorneys July 26,1949. HARTZLER 2,4 7 7,371

VARIABLE DELIVERY, REVERSIBLE FLOW VANE PUMP FOR FLUID TRANSMISSIONS I5Sheets-Sheet 5 Filed Oct. 1, 194,5

. Inventor )/4 Ealph flanielfiarizier Patented July 26, 1949 PATIENTomen VARIABLE DELIVERY, REVERSIBLE FLOW VANE PUMP FLUID SMISSIONS Ral hDaniel Hart East tyin Mo. Appiication Qctobei' 1; 1945 Serial No.619,543 1 Claim. (01. 103 -3) is practically frictionless to operatewith re sultsnt mo ne s ir sue-. 1 erection- A r r bje t of he i vsnt enis th pre ision of a unit of this character, which is simple in c st uctsn oroughl s stlsaed sfiisis t in operation, tron du abl s 9 max mumpower m s ipa pss sss s .Q a ts d void s ea transmiss on. and issrcscirs t a actu e a d insta lith hes a d ot er chistt t let n o nsi s i thei a ure 9i on rl stiq st on and a ran emen vi a ts, a w ll be here nater mor ful describ d in detail l sw trated in the accompanyingdrawings, which dis:

close the embodiment of the invention, and pointed out in the claimhereunto appended.

In the accompanying drawings:

Fi ur .1 .is a er ical lsneita -nal ssstisaa vi -W centrally through atransmission unit constructed in accordance with the invention.

Figure 2 is a view similar to Figure 1 taken substantiallyat rightangles thereto.

Figure 3 is a vertical central sectionai view thr u h e r r i gmechanism the pit and inone adjusted position.

Fig r 1 a view mila t 3 ak n se tionally at right angles to the positionof the mechanismsh wninrt eurefi.

Fi ure 5 is a viewsimi a is Fi ure 1 showing a slight modification.

Fig-prep is a view similar to Figure 2 showing the modification shown inFigure 5.

. Fi ure 7 is a plan view of .the mechanism shown in Figure 3 lookingtoward the same from the line 7-7 of Figure 3 as indicated by thearrows.

Figure 8 is a sectional view taken on the line 8-8 of Figure 4 lookingin the direction of the arrows.

Figure 9 is a perspective view of the adjustable element of thereversing mechanism shown in Figures 3, 4, 7 and 8 of the drawings.

Figure 10 is a fragmentary vertical sectional view through the unit andthe reversing mechanism showing in detail the latching of the lat: ter.

' Figure 11 is a view similar to Figure 10 showing the latch in alatching position.

Figure 12 is a fragmentary sectional View taken on the line I2--l2 ofFigure 11 lookin in the (lip rection of the arrows.

Figure 13 is an enlarged transverse sectional view taken on the line|3--l3 of Figure 1.

Figure 14 is an enlarged sectional view taken on the line Ill-l4 ofFigure 13.

Figure 15 is a sectional view through. the adjustable flow divider ofthe device.

Figure 16 is an exploded perspective view of the elements of thedivider.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawings. 7 i

Referring to the drawings in detail, particularly the views thereinexcepting Figures 5 and 6, the hydraulic power transmission unitconstituting the present invention, comprises an upstanding circularshaped casing or housing l0 having opposed end plates I I and I2,respectively, to form interiorly of such casing or housing ID a rotorchamber. l3 for a power rotor M from which extends a power shaft, aportion thereof beingindi cated at l5 journaled in a bearing 16. RotorI4-is formed with an annular rim 17 provided with uniformly spacedclearances for a plurality of impact blades or fins lfl having radialspokes 49 extending from a hub 2i journaled upon a stud axle 2! from aneccentric g2 with its turning arbor 23 fitted in a bearing 24built'outwar'd- 1y from plate 1-2. Plate I2 is also provided with arecess or pocket 25 ior the eccentric 22, Eccentric 22 has fixed theretoa throw crank or arrn 26 shown in Fig. l whereby the eccentric 22 can heshiftedto change the axis f rotation cf the tor l4 within the housingThe axisfof rota? tion of the blades is changed in this manner. The stubshaft 2' ts at b ssueed pr ss re .2? is moved when arm 25 is rotatedthereioregsh aft 2i and the axis of rotation is accordingly changed.

The housing It! is formed with a throat extension 28 having dividedpassages 29, respectively at opposite side of a stationary wall 36including an interfitted slidable partition 3| which latter has hingedat 32 thereto a control gate or valve 33, opened and closed by a pitman34 having swinging pivotal connection 35 therewith and a, bearingconnection 36 with the stud axle 2i.

as best seen in Figures 13-16 of the drawings,

When the divider seen best in Figure 15 is raised, the crank shapedlatch 31 which is pivoted to the divider 33, is also raised.Accordingly, the rollers 21 at the end of the latch 31 ride in the camtrack (unnumbered) seen in Figure 14, thereby pivotally actuating thecrank shaft latch 31.

A pair of converging tongues 10 and 12 are dis posed on the undersurfaceof the slidable plates Hand 16 on'the divider 33. Accordingly, when thedivider 33 is lowered, the crank shaped latch 31 having openings 18 and80 at the top thereof with said tongues therein spreads the plates 14and I6 apart due to the cam action associated therewith,'the spreadposition shown in'Flgure 1.3. However, when the divider is raised, thecam actuated latch 31 contracts the two plates for free flow of liquidthrough the throat.

In order to retain the plates 14 and 16 in proper position on thedivider 33, they are retained for sliding movement thereon by means ofdovetailed tongues and grooves 8| and 82 respectively formed on thebottom surface of the plates and on the top of the divider.

A spring 84 is fixed at one end to said latch 31 and to said divider atthe other end to press the rollers 27 firmly against the cam track.

Associated with the base portion 38 of the throat 28 is a fluidreversing mechanism, which includes a cylinder 39 having therein areversing valve body 40. Cylinder 39 is provided with ports 4| and 42,at its opposite ends which are aligned diametrically oppositeand-connect with straight and curvilinear fluid flow passages 43 and 44,respectively, extending through the body 40 as best seen in Figures 3,4, 7, 8 and 9 of the drawings for the proper directing of fluid underpressure to the throat 28 and thence to the chamber l3 within the casingor bushing [0. The body 40 is centrally pivoted at 45 for the turningthereof by a control lever 46. By operating the lever 46, the body 40can be turned to regulate the flow of fluid under pressure to the rotorM to drive the same in either direction. The fluid under pressure isdelivered to and from the casing or housing I through the end 41 of thecylinder 39, the supply and discharge leads of the fluid being notshown. The body 40 is locked in adjusted position by a spring-tensionedlatch 48 which can be tripped from latching position to unlatchingposition or vice versa by rotation of control lever 46. Latch 48 engagesin keeper notches 49 in the body 40 as is best shown in Figures 10, 11and 12 of the drawings.

In Figures and 6 of the drawings there is shaft, universal joints anddifierential when equipped in an automobile or other motor vehicle. Theunit has only one control lever to be operated by the foot or hand andone reverse lever which may be operated manually, electrically orhydraulically. The unit has an unlimited variation of speed and power,thus providing smooth; and economical operation.

From the foregoing it will now be seen that there is' herein provided adevice accomplishing all the objects of this invention, and others,including many advantages of great practical utility and commercialimportance.

.As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiment herein shown and describeditis to be understood that all matter herein is to'be interpreted merelyas illustrativeand not in a limiting sense.

What is claimed is: I

A unit of the kind described, comprising a housing having a fluid supplyand dischargethroat, a rotor operating Within the housing, eccentricallyadjusted impact blades associated with the rotor, a fluid divider withinthe throat for controlling the admission and discharge of fluid throughsaid throat to and from the housing, an adjustable reversing mechanismassociated with the threat for regulating the direction of flow of fluidto and from the said throat, means including an eccentric for adjustmentof the said blades with relation to the rotor, means coacting with theblade adjusting means for adjusting the divider, means for latching thereversing means in adjusted position, and means for latching the dividerin adjusted position through the action of the eccentric means.

RALPH DANIEL HARTZLER.

REFERENCES CITED The following referen ces are of record in "the file ofthis patent:

UNITED STATES PATENTS Great Britain Jan. 16, 1930

